From d8604f3c9b6ab9d2c654a310919dad913ba66edd Mon Sep 17 00:00:00 2001
From: abelvm <abel@cartodb.com>
Date: Wed, 18 Jan 2017 21:40:36 +0100
Subject: [PATCH] agg set error fix

---
 src/pg/sql/13_PIA.sql | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pg/sql/13_PIA.sql b/src/pg/sql/13_PIA.sql
index ed3c76b..2b90a95 100644
--- a/src/pg/sql/13_PIA.sql
+++ b/src/pg/sql/13_PIA.sql
@@ -114,7 +114,7 @@ DECLARE
     d numeric;
 BEGIN
     dist := 1e999;
-    pols := array_agg((ST_dump(polygon)).geom);
+    WITH collection as (SELECT (ST_dump(polygon)).geom as geom) SELECT array_agg(geom) into pols FROM collection;
     FOR j in 1..array_length(pols, 1)
     LOOP
         pol := pols[j];